981039 has 8 divisors (see below), whose sum is σ = 1313200. Its totient is φ = 651456.

The previous prime is 981037. The next prime is 981049. The reversal of 981039 is 930189.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 981039 - 2¹ = 981037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 980997 and 981015.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981039.

It is not an unprimeable number, because it can be changed into a prime (981037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (164150).

2⁹⁸¹⁰³⁹ is an apocalyptic number.

981039 is a deficient number, since it is larger than the sum of its proper divisors (332161).

981039 is a wasteful number, since it uses less digits than its factorization.

981039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 981039 is about 990.4741288898. The cubic root of 981039 is about 99.3639293866.

The spelling of 981039 in words is "nine hundred eighty-one thousand, thirty-nine".